Are there changes in testpmd?

[hao wang]

I have a pmd that I am upstreaming to DPDK and currently testing. When I
use testpmd to test my pmd, I found that my pmd could trx in DPDK 23.07,
but it cannot in DPDK 23.11. After comparing the atlantic pmd between DPDK
23.07 and 23.11, I see nearly no changes. I see the testpmd difference
between DPDK 23.07 and DPDK 23.11 and think these changes will not cause
the problem.

But when I use pktgen to test the pmd, it's ok.

Any suggestions?

Thank you very much!
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